Power = (force) x (distance / time) = force x speed .
We know the force = 800N.
We have a speed = 30km/hr, but in order to use it in the power formula,
it has to be in meters/second, so we have some work to do first.
(30 km/hr) x (1,000 m/km) x (1 hr / 3,600 sec) = 300 / 36 m/sec .
Power = (force) x (speed) = (800 N) x (300/36 m/s) = <em>6-2/3 kilowatts </em>
Work = (power) x (time) = (6,666-2/3 joule/sec) x (25sec) = <em>166,666-2/3 joules</em>.
The figure for power is slightly weird ... 746 watts = 1 horsepower,
so the truck's engine is only delivering about 8.9 horsepower.
Very fuel-efficient, but I don't think they drive trucks that way.
Part 1)
here we can say that since block slides down by 1 m in 4 s
so here we know that
d = 1 m
t = 4 s
so we can use kinematics equation to find the acceleration
Part 2
by force equation on mass m2 we can say
for another block of mass m1
solving above equations we will have
Part 3
now for mass m2 we have
Answer:
0.324 T
Explanation:
Parameters given:
Number of turns, N = 1850
Resistance, R = 30Ω
Area of each turn, A =
Charge in the circuit, q =
The induced EMF in the coil is given as:
EMF is also given in terms of current, I, and resistance, R, as:
V = IR =
=>
Charge, q, is the product of current and time. Hence:
It = q
=>
Hence, magnetic field, B, will be:
The magnitude of magnetic field, |B| will be |-0.324| = 0.324 T
Answer:
Mass.
Explanation:
I took the quiz and got the answer right